Exovolt stackable battery creates unlimited capacity

Exogear has created the Exovolt stackable batteries. Need more juice? Just add more Exovolt layers.
Exogear

Don't have enough spare juice to charge all your iThings? The Exovolt Plus is a stackable battery pack with unlimited expandable capacity, according to maker Exogear.

The charger consists of a main 5,200 mAh lithium polymer battery and sub batteries that you can pile underneath it to create a battery stack. Each unit is 3.7 inches square and weighs about 5.5 ounces.